304311132090 has 64 divisors (see below), whose sum is σ = 927424408320. Its totient is φ = 69556829760.

The previous prime is 304311132079. The next prime is 304311132091. The reversal of 304311132090 is 90231113403.

304311132090 is a `hidden beast` number, since 30 + 431 + 113 + 2 + 0 + 90 = 666.

It is a super-2 number, since 2×304311132090² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (304311132091) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 80503701 + ... + 80507480.

It is an arithmetic number, because the mean of its divisors is an integer number (14491006380).

Almost surely, 2^304311132090 is an apocalyptic number.

304311132090 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

304311132090 is an abundant number, since it is smaller than the sum of its proper divisors (623113276230).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

304311132090 is a wasteful number, since it uses less digits than its factorization.

304311132090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161011204 (or 161011198 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

Adding to 304311132090 its reverse (90231113403), we get a palindrome (394542245493).

The spelling of 304311132090 in words is "three hundred four billion, three hundred eleven million, one hundred thirty-two thousand, ninety".